1、BRITISH STANDARD AEROSPACE SERIESBS EN 2435-001:2006Paints and varnishes Corrosion resistant chromated two component cold curing primer Part 001: Minimum requirementsThe European Standard EN 2435-001:2006 has the status of a British StandardICS 49.040g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56
2、g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 2435-001:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2006 BSI 2006ISB
3、N 0 580 48543 9National forewordThis British Standard is the official English language version of EN 2435-001:2006. The UK participation in its preparation was entrusted by Technical Committee ACE/65, Non-metallic materials for aerospace purposes (excluding textiles), to Subcommittee ACE/65/-/3, Pai
4、nts, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate
5、 them in the UK.A list of organizations represented on this subcommittee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled
6、“International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with
7、a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 7 and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.
8、Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 2435-001June 2006ICS 49.040English VersionAerospace series - Paints and varnishes - Corrosion resistantchromated two component cold curing primer - Part 001:Minimum requirementsSrie arospatiale
9、 - Peintures et vernis - Peinture primaireanti-corrosion chromate deux composants polymrisant temprature ambiante - Partie 001 : Exigences minimalesLuft- und Raumfahrt - Anstrichstoffe -Korrosionsbestndiger Zweikomponenten-Grundanstrich,kalthrtend, chromathaltig - Teil 001:MindestanforderungenThis E
10、uropean Standard was approved by CEN on 27 February 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
11、 concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its o
12、wn language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembour
13、g, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of e
14、xploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 2435-001:2006: E2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Definitions 4 4 Classification4 5 Required characteristics.5 6 Designation 5 Annex A (normative) Test methods .6 EN 2435-001:
15、20063 Foreword This European Standard (EN 2435-001:2006) has been prepared by the AeroSpace and Defense Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has re-ceived the approval of t
16、he National Associations and the Official Services of the member countries of ASD, prior to its presentation to CEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2006, and conflicting
17、national standards shall be withdrawn at the latest by December 2006. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the
18、 CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Den-mark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxem-
19、bourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzer-land and the United Kingdom. EN 2435-001:20064 1 Scope This standard specifies the minimum requirements for a two-component, chromated epoxy or polyurethane, corrosion resistant primer which can
20、be used with or without a finish for aerospace applications. The properties specified in this standard are obtained on defined aluminium alloy test pieces prepared in accordance with EN 3837, procedure A and ISO 3270. The ability of the material to be used for a specific application (e.g. alternativ
21、e substrate, specific drying conditions, etc.) shall be determined by supplementary tests to confirm that the requirements of this standard are met. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated refer-ences, only the editi
22、on cited applies. For undated references, the latest edition of the referenced document (including amendments) applies. EN 2379, Aerospace series Fluids for assessment of non-metallic materials1)EN 3837, Aerospace series Paints and varnishes Nature and method for surface preparation of test pieces i
23、n aluminium alloys 1)EN 3840, Aerospace series Paints and varnishes Technical specification 1)ISO 1518, Paints and varnishes Scratch test ISO 2409, Paints and varnishes Cross-cut test 3 Definitions None applicable. 4 Classification The primers are classified according to the nature of the most typic
24、al chemical reaction that occurs between the two components: Type A: chromated epoxy (reaction between an epoxy resin and an activator with amino functional groups). Type B: polyurethane (reaction between an hydroxyl functional resin and a polyisocyanate activator). 1) Published as ASD Prestandard a
25、t the date of publication of this standard. EN 2435-001:20065 5 Required characteristics Requirements concerning delivery, qualification, batch acceptance, sampling, test methods and other re-quirements specific to the material are defined in EN 3840. 5.1 Composition The primer consists of: a base c
26、ontaining one or several corrosion inhibitors associated, or not, with pigments and fillers dis-persed in a mixture of resins and solvents; an activator solution; and, if need be, a thinner. These components shall be mixed in simple whole number proportions, by volume or by weight, in accor-dance wi
27、th the manufacturers instructions. 5.2 Required characteristics 5.2.1 General The required characteristics are listed in the tables in annex A in accordance with the technical specification EN 3840. Unless otherwise specified, these characteristics are obtained for a primer paint applied with a dry
28、film thickness of (20 5) m and dried at (23 2) C/(50 5) % HR for at least 7 days (168 h) before testing. 5.2.2 Qualification tests For qualification, all tests mentioned, in the tables in Annex A, shall be carried out. 5.2.3 Acceptance tests For batch acceptance, only the tests marked (*), in the ta
29、bles in Annex A, need to be carried out. 6 Designation EXAMPLE Description block Identity block PRIMER EN 2435-001 A Number of this standard Type A or type B (see clause 4) EN 2435-001:20066 Annex A (normative) Test methods Table A.1 Tests on individual paint components Test according to EN 3840 Cha
30、racteristics Units Base Activator Thinner 1 Non-volatile matter % 2 %a b 2 %a b3 * Density g/cm3 2 %a b4 * Density hydrometer g/cm3 1 %a b 1 %a b7 Flash point C Reference valueb Reference valueb Reference valueb* See 5.2.3. aThe deviation specified is as compared to the reference value (see footnote
31、 b). bThe reference value is as established during qualification. Table A.2 Tests on liquid paint Test according to EN 3840 Characteristics Units Requirements 5 * Sedimentation rating ml/4 h 30 Base + activator + thinner 8 * Flow time s 10 % 9 * Viscosity high shear rate Pa.s Base + activatora b c10
32、 * Fineness of grind m 30 Base + activator 20 * Pot life s or Pa.s 2 x value of test 8 or 9 after 4 h Base + activator + thinnerc49 Volatile organic content (VOC) g/l Reference value Base + activator + thinnerb* See 5.2.3. aThe deviation specified is as compared to the reference value (see footnote
33、b). bThe reference value is as established during qualification. cTest 8 shall be used for non-thixotropic paints and test 9 for thixotropic paints. Table A.3 Tests on wet film Test pieces according to EN 3837 Test according to EN 3840 Characteristics Units Requirements Metal Treatment 21 * Surface
34、dry time min. 60 A2Process A 22 * Drying time print free h 4 using a mass of 1 000 g A2Process A 23 * Through-dry time h 16 using a mass of 1 500 g A2Process A * See 5.2.3 EN 2435-001:20067 Table A.4 Tests on dry film Test pieces according to EN 3837 Test according to EN 3840 Characteristics Temp C/
35、% RH/ time (h) Requirements Metal Treatment Initial state 24 * Adhesion 23/50/- Classification 1 A2Process A 29 * Scratch resistance 23/50/- 1 500 g metal not exposed A2Process A Resistance to fluids 34 Water behaviour 23/-/336 Cross-hatch (ISO 2409)Classification 1 Scratch (ISO 1518) 1200 g metal n
36、ot exposed No blistering nor detach-ment (10 mag) A2Process A 35 * Resistance to fluids using tri-N-butyl phosphate (EN 2379 Group 2) 70/-/24 Scratch (ISO 1518) 1 200 g metal not ex-posed No blistering nor detach-ment (10 mag) A2Process A Corrosion tests 42 Resistance to neutral salt spray 35/-/1000
37、 No corrosion more than 2 mm from the scratch No blistering nor detach-ment A1Process A * See 5.2.3 EN 2435-001:2006BS EN 2435-001:2006BSI389 Chiswick High RoadLondonW4 4ALBSI British Standards InstitutionBSI is the independent national body responsible for preparing British Standards. It presents t
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